Making of sheet copper electrolytically



Dec. 29,1925.

M. A. JULLIEN MAKING OF SHEET COPPER ELECTRLYTICALLY Filed Nov. 4, 1924 Amm/Er .infill ,Illini MMM@ w Patented Dec. 29, 1925. i l

UNITED STATES PATENT OFFICE..

, MARCEL ANDR JULLIEN, F PARIS, FRANCE.

MAKINGOF SHEET COPPER ELIECTBOLYTICALLY.

Application tiled November 4, 1824. Serial No. 747,811.

To altwho'm: z't may concern.' length and in preventing any deformation Be it known that I, MARCEL ANDR JUL- of the said element b reinforcing it with- LIEN, a citizen of the Republic of France, braces set, not at rig t angles to the axis residing at Paris, France, have invented of the cathode, but slantwise with respect to new and useful Improvements in the Maksaid axis vand so arranged ythat the action 00 ing of Sheet Copper Electrolytically, of' resulting from the thickness of the said which the following is a specification. braces on the process of electrolysis will be It is well known that for electrolytically felt uniforml on the whole surface of the making sheet copper by means of a deposit revolving cat ode, this arrangement of the on a revolving cathode it has been proposed braces constituting one of the characteristic 65 to use an anode constituted by a basket of features of my invention. any suitable shape partly surrounding the In order that m invention may be more cathode and containing cop er shavings or clearly understoo I have illustrated, as granulated black copper, suc basket or conan example, an embodiment of the latter l tainer having its sides or walls, or only in and by drawings appended hereto and 70 such of them as are opposite the cathode, wherein: made of a porous material so as to form a Figure 1 is a plan view of apparatus diaphragm permitting the electrol e to arranged according to my invention, for penetrate freely thereinto. Instead o being making sheets of great length;

. porous the sides or walls may be holed, but Figure 2 is a side view showing the ar- 75 in either case, when the manufacture of very rangement of the various reinforcing braces long perfectly homogeneous and even sheets of one of the holed walls; is attempted, such baskets or containers can Fig. 3 is a cross section of the apparatus. not be made suiiiciently large without be- 1 is a vat containing the electrolyte into coming deformed; and in consequence of which are immersed the revolving cathode 80 the porous vor holed wall opposite the 2 and the anode. The latter consists of a cathode becoming deformed or warped, basket or container 3, the walls or sides of unevenness in the electrolytic deposit takes which are porous or holed and in which are place, thus defeating the very purpose for placed at 4 copper waste or granulated which said porous or holed walls are inblack copper.

tended. Metal plates 5 supply the current to the In industrial practice manufacturers anode and such plates are not immersed in have usually employed wood for the holed the electrolyte but sprinkled with the elecwalls and this material is particularly liable trolytic solution in the known manner so to warp. as to ensure .good conductivity. a0

A method intended to prevent the def- Figure 2 shows the device reinforcing ormation of long elements, consist in conthe holed Walls 3; each wall comprising two sti-noting the basket or container with indilongitudinal braces 6 and 7 tov which are vidual elements arranged side by side and secured the slanting braces 8 mentioned'in small enough to avoid deformation would the earlier part of this specification. Fig- 95' be objectionable, since there would be at the ure 2 shows the arrangement of these braces jointin g of two successive elements a zone which are, as can be seen, slanting in respect wherein electrolysis would not take place to the axis of the cathode and suitably under the same conditions as in the zone spaced, as illustrated, so that every cross corresponding to each of the elements and plane always cuts, for one of the walls, one 10o unevennesses in the cathodic deposit would brace 8 and can cut only one; the dotted ensue. lines a b, a/ bf indicate clearly the arrange- The same objection would be encounlment required to fulfil this condition. tered when trying to use a single elementl At their ends the longitudinal braces 6 v of adequate length reinforced with braces and 7 are connected by normal uprights 9.l 105 located in planes arranged at right angles As will be easily understood, the rotation to the axis of the cathode. of the cathode and this characteristic ar-v Tlie improvement which is the object of rangement of braces 8, will insure electromy invention meets the case and consists lytic action under the same conditions on in using a single element of any required all the cross planes (except at the ends of 11ol the cathode) and I thus obtain the required reinforcing of the walls without impai'ring the homogeneousness and the evenness of the electrolytic deposit on the cathode.

Havin now particularly ascertained and describec? the nature of my said invention as well as the manner in which the same is to be performed, I declare that what I claim is:

Apparatus for use in the electrolytic manu acture of copper sheets of substantial size, comprising a container for the elec- 4trolyte a revolving cathode mounted in the container, and an anode serving as a container for copper waste or granulated black copper and comprising permeable walls and reinforcing members mounted on said walls in a slantwise direction toprevent deformation of the said walls without impairing the evenness of the electrolytic deposit on 20 the surface of the revolving cathode.

MARCEL ANDR J ULLIEN 

